Skip to content

411 WORKS Stainless Steel O2 Bung

Original price $7.50 - Original price $30.00
Original price
$7.50
$7.50 - $30.00
Current price $7.50

The 411 WORKS Stainless Steel O2 Bung is a precision-machined fabrication component designed to provide a secure mounting point for compatible oxygen and wideband sensors in custom exhaust systems. Manufactured in-house in the USA on HAAS CNC machines, each bung is machined from high-quality 304L stainless steel sourced from Sweden.

Featuring an M18x1.5 thread and a coped mounting surface, the bung is designed to fit exhaust tubing ranging from 2.5 inches through 4 inches in diameter. Its stainless steel construction makes it a purpose-built option for custom exhaust, turbo, and motorsport fabrication.

304L Stainless Steel Construction: Machined from high-quality Swedish 304L stainless steel for use in demanding exhaust fabrication applications.

M18x1.5 Thread: Features an M18x1.5 thread for compatible oxygen and wideband sensors.

Coped Mounting Surface: Designed with a coped profile to fit tubing ranging from 2.5 inches to 4 inches in diameter.

Exhaust Fabrication Design: Provides a dedicated threaded mounting point for integrating a compatible sensor into custom exhaust tubing.

CNC-Machined Construction: Precision machined in-house using HAAS CNC equipment for consistent dimensions and quality.

Made in the USA: Manufactured in-house by 411 WORKS using 304L stainless steel sourced from Sweden.

What's Included

  • (1) 411 WORKS Stainless Steel O2 Bung

Vehicle Fitment

  • Universal fabrication application
  • Designed for compatible exhaust systems using 2.5" to 4" diameter tubing
  • Designed for compatible O2 and wideband sensors using M18x1.5 threads
  • Final fitment depends on tubing diameter, sensor dimensions, mounting location, and available clearance

Specifications

  • Brand: 411 WORKS
  • Product Type: O2 Sensor Bung
  • Material: 304L Stainless Steel
  • Material Origin: Sweden
  • Thread Size: M18x1.5
  • Tube Compatibility: 2.5" to 4" Diameter
  • Mounting Surface: Coped
  • Manufacturing Process: CNC Machined
  • CNC Equipment: HAAS
  • Manufacturing Location: USA
  • Fitment: Universal

Important Notes

  • Sold individually.
  • This is a universal fabrication component and is not vehicle specific.
  • Designed for tubing ranging from 2.5" to 4" in diameter.
  • Sensor thread size is M18x1.5.
  • Verify your oxygen or wideband sensor thread size before ordering.
  • Verify tubing diameter, sensor location, orientation, and available clearance before welding.
  • Welding and fabrication are required for installation.
  • Oxygen sensor or wideband sensor is not included.
  • Follow the sensor manufacturer's requirements for sensor positioning and installation angle.
  • Professional exhaust fabrication and welding are recommended.

Why Choose 411 WORKS?

411 WORKS manufactures its fabrication components in-house using HAAS CNC equipment with an emphasis on precision, quality, and reliability. The Stainless Steel O2 Bung combines 304L stainless steel construction with an M18x1.5 thread and a coped mounting surface designed for several common exhaust tubing diameters.

For custom exhaust and motorsport fabrication, it provides a straightforward solution for adding a compatible oxygen or wideband sensor mounting point to 2.5-inch through 4-inch tubing.

About Us

We are passionate Lexus and Toyota enthusiasts dedicated to providing the highest quality aftermarket parts to enhance your ride. Our goal is to help you find the perfect performance upgrade, whether you're building your dream car or just adding that next improvement. We take pride in offering products that we trust for our own vehicles.

Shipping

Shipping times vary based on item availability and specific lead times. You can expect an email with an estimated shipping date within 1-3 days of placing your order. Many in-stock parts ship within 2-5 business days, while certain built-to-order items may take up to 7-10 business days. For back-ordered items, availability may vary, but we will email you with any ETA changes.

Once your items are ready to ship, we will send tracking information via email so you can easily follow your package from our warehouse to your door. Please note, some parts may be shipped separately and could arrive at different times. Shipping costs apply to the lower 48 states, unless stated otherwise, and international orders may be subject to additional customs or duties fees.

What to Expect Upon Delivery

Upon receiving your order, please inspect the items immediately for any damage or missing parts. Verify all items against the packing slip or instructions before starting installation. We cannot be held responsible for costs incurred from delays due to missing items.

If any items are damaged or missing, please get in touch with us within 14 days of receipt so we can assist with a replacement. Claims made after this period will not be honored.

Cancellation Policy

If you need to cancel or modify your order, please contact us as soon as possible. We strive to ship your order quickly, and once processing begins, cancellations may be subject to a restocking fee. Orders canceled within 24 hours of purchase may not incur a fee, but after that time, restocking fees (typically 20%) will apply depending on the items and the stage of fulfillment.

Return Policy

Customer satisfaction is our priority, and we are happy to assist with returns. However, due to the complexity of sourcing and delivering our products, returns are subject to a restocking fee (usually 20%) based on the item and manufacturer.

Before returning any items, please get in touch with us to receive a return authorization. All return requests must be made within 30 days of receiving your merchandise. Once approved, items must be returned within 14 days in their original condition. Improper packaging of returned items may result in customer responsibility for damages.

Customers are responsible for return shipping costs, unless the item is defective or we shipped the wrong item. A trackable shipping method is strongly recommended.

Warranty

We honor all manufacturer warranties and are here to support you in getting the quality products you deserve. However, please note that warranty claims are available to the original purchaser only. In certain situations, manufacturers may handle warranty claims directly, and we are unable to cover costs not specified in the manufacturer's warranty (e.g., shipping, labor). If you have any questions, feel free to reach out to us.

Emissions Notes

All parts and services offered by LunaticsCo are for competition vehicles only. Use on state and federal highways may be a violation of the EPA Clean Air Act. The Clean Air Act can be found at http://www.epa.gov/air/caa/. This document details what are considered violations of the CAA and the corresponding penalties for failure to comply. It should be read in full before purchasing or installing this competition-use-only product. Ensuring that all emissions, noise/sound, and speed/use-related laws are followed is the responsibility of the buyer(s). Installation and use of this product indicate that this disclaimer has been read, acknowledged, and fully understood by both the buyer(s) and installer(s). The buyer(s) assume all associated risks of purchase.

Federal and several state laws prohibit the removal, modification, or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. LunaticsCo assumes no liability for any violations arising out of any federal, state, or provincial emissions or safety requirements on motor vehicles resulting from the customer’s modifications and/or use of LunaticsCo products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws.